The shift from astronomy to astrophysics necessitated the development of new tools of observation at the end of the 19th and beginning of the 20th century. In this episode, we look at the rise of the reflecting telescopes and the men who use them including, James Keeler and George Ritchey, probably the greatest telescope designer in history.
In 1927 Fr. Georges Lemaire published a paper in a little known Belgian scientific journal that described an expanding universe. Two years later, Milton Humason and Edwin Hubble presented evidence to support support this model. In this episode, we look at the development of the idea of a universe that was not static or steady.
On November 25th of 1915, Albert Einstein presented a paper on his General Theory of Relativity that by its end had conclusively shown that the Vulcan hypothesis was not necessary to explain the precession of the perihelion of the orbit of Mercury. It also completely reimagined the structure of space and time and remade the universe. In this episode of the podcast, we follow Einstein's journey of discovery from the work of James Clerk Maxwell to the eclipse observations of Arthur Stanley Eddington.